HP Omen X Hardware Reference Manual page 27

4. Insert the memory module into the socket so that the latches lock it in place.
NOTE: A memory module can be installed in only one way. Match the notch on the module with the tab
on the memory socket.
5. Replace the access panel.
6. Reconnect the power cord and any external devices, and then turn on the computer.
The computer automatically recognizes the additional memory.
Installing system memory 21